Prompt before closing pane with multiple client apps

[vhanla]

Description of the new feature/enhancement

Some console apps, like vim, neovim, far, etc, are ignored when you accidentally hit Ctrl+W and your unsaved work is gone forever.

Proposed technical implementation details (optional)

I'm not sure how to do that, but it would be nice to offer an API or something to block closing if some return code is not met.

[zadjii-msft]

You know, I was going to just close this as a combo of #5301, #2976 and #5065. However, none of those cover this specific case, where we prevent closing a terminal tab/pane when there's more than one client in the process tree.

We really don't have a comprehensive discussion of all these requirements anywhere, do we?

Scenarios

1. I want to never be prompted for confirmation
2. I want to be prompted for confirmation when I close the window with multiple tabs
3. I want to be prompted for confirmation when I close a tab with multiple panes (closeTab should present a confirmation dialog #5301)
4. I want to be prompted for confirmation when I close a pane with multiple clients (This thread Prompt before closing pane with multiple client apps #6549, also Show processes in the "Do you want to close all tabs" dialog #5065 & [Feature Request] Warn if there is a program running before a tab is closed #10784 are dupes)
5. I want to be prompted for confirmation when I close a pane always (Settings for notification on window close / system shutdown #12827)
6. possibly more scenarios?
7. I want to be prompted for confirmation when I close a pane with multiple clients, but I don't care about closing multiple tabs/panes with a single client in each.

Furthermore, we've only got one setting so far - confirmCloseAllTabs. This basically enables 1 and 2. #5874 enables 3 for everyone, without a way to opt-out.

[zadjii-msft]

Uhg, so the way I see it is something like this

which is, unwieldy to fill out, and I'm not super passionate about filling in right now. If someone has a better idea, please feel free to chime in.

[Chips1234]

You know, I was going to just close this as a combo of #5301, #2976 and #5065. However, none of those cover this specific case, where we prevent closing a terminal tab/pane when there's more than one client in the process tree.

We really don't have a comprehensive discussion of all these requirements anywhere, do we?

Scenarios

1. I want to never be prompted for confirmation

2. I want to be prompted for confirmation when I close the window with multiple tabs

3. I want to be prompted for confirmation when I close a tab with multiple panes

4. I want to be prompted for confirmation when I close a pane with multiple clients

5. I want to be prompted for confirmation when I close a pane always

6. possibly more scenarios?

7. I want to be prompted for confirmation when I close a pane with multiple clients, but I don't care about closing multiple tabs/panes with a single client in each.

Furthermore, we've only got one setting so far - confirmCloseAllTabs. This basically enables 1 and 2. #5874 enables 3 for everyone, without a way to opt-out.

@zadjii-msft I think your comment is covered with #2976